Audio
- Horn (instrument), a brass musical instrument often called the "French horn"
- Cor anglais, a double-reed woodwind musical instrument often called the "English horn"
- Horn (acoustic), a conical or bell shaped aperture used to guide sound
- Horn (album), an album by Pharaoh Overlord
- Horn loudspeaker
- Natural horn, a brass musical instrument
- Vehicle horn
- Ear trumpet
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